Per Drink: Muddle 4 blueberries in bottom of shaker. Add 2 tons of ice, then 2 oz Vodka, .75 oz Creme de Cassis, .5 oz Lemon juice. Shake like the very devil! Rim cocktail glass with Lemon slice. Strain drink into glass. Garnish with 2 more blueberries speared on a toothpick and artfully balanced across the rim of the glass.